When the cable is bent or twisted, the fibers can move inside the cable, which can create small gaps or spaces between the fibers. This damage can take several forms, including micro-bending, macro-bending, and stress-induced attenuation. Micro-bending occurs when the fiber is bent at a small radius, typically less than a few millimeters. It can occur during installation, handling, or operation of the cable. For example, some cables are twisted to reduce. In the process of optical fiber cable manufacturing, the process of twisting several loose tube and reinforcement is called cabling (stranding). 1-2 Figure 1 shows a representative cross section of a fiber ribbon. els on a variety of high performance synthetic fibers.